Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4KKJ callsign genealogy
Currently held by JOHNSTON, CAPTAIN JOHN F
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W4KKJ's current licensee, walking backwards.
- JOHNSTON, CAPTAIN JOHN FFLgranted 2008-10-08cancelled 2008-10-28
Successor callsigns
Callsigns held now by people who previously held W4KKJ.
No current licensee on record previously held this callsign.